Jest 21 expects result.message to always be a function

ref: jestjs/jest#3921 ref: jestjs/jest#3972
nigelzor · Aug 25, 2017 · d5f18db · d5f18db
1 parent 47eaa98
commit d5f18db
Showing 1 changed file with 5 additions and 5 deletions.
diff --git a/packages/jest-enzyme/src/index.js b/packages/jest-enzyme/src/index.js
@@ -25,22 +25,22 @@ beforeEach(() => {
       [matcherKey](wrapper, ...args) {
         const result = enzymeMatchers[matcherKey].call(this, wrapper, ...args);
 
-        if (this.isNot) {
-          result.message = result.negatedMessage;
-        }
+        let message = this.isNot ? result.negatedMessage : result.message;
 
         if (result.contextualInformation.expected) {
-          result.message += `\n${this.utils.RECEIVED_COLOR(
+          message += `\n${this.utils.RECEIVED_COLOR(
             result.contextualInformation.expected
           )}`;
         }
 
         if (result.contextualInformation.actual) {
-          result.message += `\n${this.utils.EXPECTED_COLOR(
+          message += `\n${this.utils.EXPECTED_COLOR(
             result.contextualInformation.actual
           )}`;
         }
 
+        result.message = () => message;
+
         return result;
       },
     }[matcherKey];